X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fsse_functions_xmm.cc;h=6eac488a253a3af89df5f7044a1e60d07ed126b2;hb=97c637e39914a8b68f1d0c83d3f8c37d81fc43c2;hp=c20dbb4e27383667b73241f78c5e41222203bec2;hpb=bb9cc45cd22af67ac275a5e73accbe14fee664d8;p=ardour.git

diff --git a/libs/ardour/sse_functions_xmm.cc b/libs/ardour/sse_functions_xmm.cc
index c20dbb4e27..6eac488a25 100644
--- a/libs/ardour/sse_functions_xmm.cc
+++ b/libs/ardour/sse_functions_xmm.cc
@@ -22,7 +22,7 @@
 #include "ardour/types.h"
 
 void
-x86_sse_find_peaks(const ARDOUR::Sample* buf, nframes_t nframes, float *min, float *max)
+x86_sse_find_peaks(const ARDOUR::Sample* buf, ARDOUR::pframes_t nframes, float *min, float *max)
 {
 	__m128 current_max, current_min, work;
 
@@ -31,7 +31,7 @@ x86_sse_find_peaks(const ARDOUR::Sample* buf, nframes_t nframes, float *min, flo
 	current_max = _mm_set1_ps(*max);
 
 	// Work input until "buf" reaches 16 byte alignment
-	while ( ((unsigned long)buf) % 16 != 0 && nframes > 0) {
+	while ( ((intptr_t)buf) % 16 != 0 && nframes > 0) {
 
 		// Load the next float into the work buffer
 		work = _mm_set1_ps(*buf);
@@ -45,8 +45,11 @@ x86_sse_find_peaks(const ARDOUR::Sample* buf, nframes_t nframes, float *min, flo
 
         // use 64 byte prefetch for quadruple quads
         while (nframes >= 16) {
+#ifdef COMPILER_MSVC
+				_mm_prefetch(((char*)buf+64), 0);  // A total guess! Assumed to be eqivalent to
+#else                                              // the line below but waiting to be tested !!
                 __builtin_prefetch(buf+64,0,0);
-
+#endif
                 work = _mm_load_ps(buf);
                 current_min = _mm_min_ps(current_min, work);
                 current_max = _mm_max_ps(current_max, work);